02161061_陳侑增, Week02

void setup(){
  size(800,600);
  background(255);
  stroke(#FF081C);
}
float TU=1;
color myStroke=color(0);
void draw(){
  stroke(0);strokeWeight(1);
  fill(0,255,0);rect(0,0,100,100);
  fill(0,0,255);rect(0,100,100,100);
  fill(255,0,0);rect(0,200,100,100);
  stroke(myStroke);strokeWeight(TU);
}
void mouseDragged(){
  line(mouseX,mouseY,pmouseX,pmouseY);
}
void mousePressed(){
    if(mouseX<100 && mouseY<100){myStroke=color(0,255,0);}
    else if(mouseX<100 && mouseY<200){myStroke=color(0,0,255);}
    else if(mouseX<100 && mouseY<300){myStroke=color(255,0,0);}
    if(mouseX>700)TU=mouseY/30;
}
小畫家一步一步的完成了，從一開始的畫線，到可以改變顏色跟比畫粗細。

刮畫的簡易寫法

void setup(){

  size(800,600);

  colorMode(HSB,800);

  background(0);

  strokeWeight(2);

}

void draw(){

  if(mousePressed){

    stroke(mouseX,mouseY,800);

    line(mouseX,mouseY,pmouseX,pmouseY);

  }

}